title: Single-trial detection of visual evoked potentials by common spatial patterns and wavelet filtering for brain-computer interface.
abstract: Event-related potentials (ERPs) are widely used in brain-computer interface (BCI) systems as input signals conveying a subject's intention. A fast and reliable single-trial ERP detection method can be used to develop a BCI system with both high speed and high accuracy. However, most of single-trial ERP detection methods are developed for offline EEG analysis and thus have a high computational complexity and need manual operations. Therefore, they are not applicable to practical BCI systems, which require a low-complexity and automatic ERP detection method. This work presents a joint spatial-time-frequency filter that combines common spatial patterns (CSP) and wavelet filtering (WF) for improving the signal-to-noise (SNR) of visual evoked potentials (VEP), which can lead to a single-trial ERP-based BCI.
authors.forename: Yiheng
authors.initials: Y
authors.lastname: Tu
authors.forename: Gan
authors.initials: G
authors.lastname: Huang
authors.forename: Yeung Sam
authors.initials: YS
authors.lastname: Hung
authors.forename: Li
authors.initials: L
authors.lastname: Hu
authors.forename: Yong
authors.initials: Y
authors.lastname: Hu
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology; D062207:Brain-Computer Interfaces; D004566:Electrodes; D004569:Electroencephalography / Q000379:methods*; D004867:Equipment Design; D005071:Evoked Potentials / Q000502:physiology*; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009460:Neurologic Examination; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted; D059629:Signal-To-Noise Ratio; D013997:Time Factors; D058067:Wavelet Analysis; D055815:Young Adult